参数资料
型号: MPC8536ECVTATHA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1250 MHz, MICROPROCESSOR, PBGA783
封装: 29 X 29 MM, 2.80 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-783
文件页数: 78/127页
文件大小: 1893K
代理商: MPC8536ECVTATHA
MPC8536E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
Freescale Semiconductor
54
Figure 27 provides the AC test load for eTSEC.
Figure 27. eTSEC AC Test Load
Figure 28 shows the RMII receive AC timing diagram.
Figure 28. RMII Receive AC Timing Diagram
2.9.3
SGMII Interface Electrical Characteristics
Each SGMII port features a 4-wire AC-Coupled serial link from the dedicated SerDes 2 interface of MPC8536E as shown in
Figure 29, where CTX is the external (on board) AC-Coupled capacitor. Each output pin of the SerDes transmitter differential
pair features 50-
Ω output impedance. Each input of the SerDes receiver differential pair features 50-Ω on-die termination to
S2GND (xcorevss). The reference circuit of the SerDes transmitter and receiver is shown in Figure 68.
When an eTSEC port is configured to operate in SGMII mode, the parallel interface’s output signals of this eTSEC port can be
left floating. The input signals should be terminated based on the guidelines described in Section 3.6, “Connection
Recommendations,as long as such termination does not violate the desired POR configuration requirement on these pins, if
applicable.
Fall time TSECn_RX_CLK (80%–20%)
tRMRF
1.0
2.0
ns
RXD[1:0], CRS_DV, RX_ER setup time to TSECn_RX_CLK rising edge
tRMRDV
4.0
——ns
RXD[1:0], CRS_DV, RX_ER hold time to TSECn_RX_CLK rising edge
tRMRDX
2.0
——ns
Note:
1. The symbols used for timing specifications herein follow the pattern of t(first two letters of functional block)(signal)(state) (reference)(state)
for inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tMRDVKH symbolizes MII receive
timing (MR) with respect to the time data input signals (D) reach the valid state (V) relative to the tMRX clock reference (K) going
to the high (H) state or setup time. Also, tMRDXKL symbolizes MII receive timing (GR) with respect to the time data input signals
(D) went invalid (X) relative to the tMRX clock reference (K) going to the low (L) state or hold time. Note that, in general, the clock
reference symbol representation is based on three letters representing the clock of a particular functional. For example, the
subscript of tMRX represents the MII (M) receive (RX) clock. For rise and fall times, the latter convention is used with the
appropriate letter: R (rise) or F (fall).
Table 37. RMII Receive AC Timing Specifications (continued)
At recommended operating conditions with L/TVDD of 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
Output
Z0 = 50 Ω
LVDD/2
RL = 50 Ω
TSECn_RX_CLK
RXD[1:0]
tRMRDX
tRMR
tRMRH
tRMRR
tRMRF
CRS_DV
RX_ER
tRMRDV
Valid Data
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MPC8536ECVTAULA 功能描述:微处理器 - MPU 8536 Encrypted RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
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